Endorsed by the American Museum of Natural History, this compact planetarium projector is designed to project on a flat surface or in a corner of a room, with masks which enable the user to project specific parts of the night sky. An audio CD explains which stars are visible in different seasons and how to display them with your projector. An illustrated instruction manual with keys to the CD is also provided. Uses 2 C batteries and a port for an optional voltage converter (not incl.) A great way to learn about the night sky in your own home!